I am 67 days post SCT and looking for the COVID primary series but having difficulty. The pharmacist I talked to said they were phasing out the original vaccine as the primary series and are moving to using the bivalent vaccine as the primary series of vaccine. Has anyone done this? If so, what is the time between doses? Is it the same as the original: three doses at least 1 month apart and then the last dose two months after those doses.